7204 ACDGA/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7204 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7204 ACDGA/P4A is a single-row angular contact ball bearing designed for applications demanding ultra-high precision and exceptional rotational accuracy. Manufactured to P4A tolerance class with an Extra Light (A) preload, this bearing delivers superior running accuracy and minimal vibration. Its 25° contact angle provides excellent capacity for combined radial and axial loads, while the phenolic resin cage enables high-speed operation up to 100,500 rpm. As a universally matchable (SU) bearing, it can be paired in any combination for precise preload control in multi-bearing arrangements.
7204 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Impact |
|---|---|---|
| 7204 | Basic bearing series with 20mm bore, 47mm OD | Standard metric dimensions for compact design |
| AC | Angular Contact design | Optimized for combined radial and axial loads |
| DGA | Extra Light preload (Class A) | Minimal friction, ideal for high-speed applications |
| P4A | Ultra-precision tolerance class | Exceptional running accuracy and dimensional stability |
7204 ACDGA/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and consistent performance in precision applications.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and reduced friction, enabling the bearing to achieve limiting speeds of 100,500 rpm while maintaining stability.
Optimized Load Capacity: With a 25° contact angle and 11 precision balls of 7.938mm diameter, this bearing delivers radial dynamic load rating of 2565 lbf and radial static load rating of 1260 lbf, making it suitable for demanding applications.
Universal Matching Design: As an SU (Universal Matchable) bearing, the 7204 ACDGA/P4A can be supplied in sets of 3 bearings that can be arranged in any combination, providing flexibility in achieving precise preload configurations.
7204 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional running accuracy
- High-Speed Motors: Electric spindle motors and high-frequency motor applications
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- Aerospace Systems: Guidance systems, gyroscopes, and avionics requiring ultra-precision bearings
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
